Spring-switch.



No. 747,956. PATENTBD DEC. 29, 1903.1

B. ENTWISLE & F. G. WBRTZ.- SPRING SWITCH.

APPLICATION FILED DEC. 22, 1902.

N0 MODEL.

WITNESSES: K II! TOR-S MMW I miimsk in: ubmus rmns c0, morouma, WASHINGTON. n. c.

UNITED STATES Patented December 29, 1903.

PATENT OFFICE.

EDWARD B. ENTWISLE AND FRANK G. WERTZ, OF JOHNSTOWN, PENNSYL- VANIA, ASSIGNORS TO THE LQRAIN STEEL COMPANY, A CORPORATION OF PENNSYLVANIA.

SPRING-SWITCH.

SPECIFICATION formingpart of Letters Patent N 0. 747,956, dated Deoember'29, 1903.

Application filed December 22, 1902- Serial No. 136,185. (No model.)

To all whom it may concern.-

Be it known that we, EDWARD B. ENTWISLE' and FRANK G. WERTZ, of Johnstown, in the county of Cambria and State of Pennsylvania,

have invented a new and useful Improvement Our invention has relation to certain new and useful improvements in spring-switches and in operating means therefor, and is designed to provide means of improved character-whereby the action of the spring may be reversed and made to act in either one of two directions to thereby hold the switch tongue or point in either one of two positions, also to provide simple and convenient means for moving the tongue against the action of said spring when a car is to take the track other than that for which the tongue is nor-- mally set.

With these objects in'view the invention consists in the novel construction and combination of parts, all substantially as hereinafter described, and pointed out in the appended claims, reference being had to the accompanying drawings, in which- Figure l is a vertical longitudinal section illustrating theinvention and its application; Fig. 2, a plan view of the samejand Fig. 3 a view similar to Fig. 1, showing the spring set to hold the tonguein the opposite position.

The letter A designates a tongue-switch structure, having a movable tongue or point B.

O is a spring-box having a removable cover. (Not shown.)

D is a'rod which is'securely fastened to adepending lug b of the switch-tongue B and which extends through the switch structure into the spring-box O. E is a stiff coiled I spring, which is seated around the end porspring is therefore such as to hold the switchposition.

tongue Bovertoits extreme right-hand position. In Fig. 3 the washer F is seated against a shoulder on the central portion of the rod, while the bearing-pieceGrv is moved to form a bearing for the opposite end of the spring, which now acts to hold the tongue in the opposite or left-hand position. To provide for this change in the position of the bearingpiece G, seats g are formed at two different points in the side walls of the box, and the end portions g of the said piece are made to fit loosely in said seats, so that it may be readily lifted and changed from one position to the other.

The rod D is formed inside the spring-box with a slotted or yoke portion D,throngh which extends a short lever H. This lever H is horizontally pivoted at one end portion in the upper inner end portion of the springbox, and to its opposite end portion is con- I nected a rod I, which may extend through a suitable conduit J to an operating-lever K, located at the curb ,or other desired point. By operating this lever the switch-tongue may be thrown from the normal position in which it is held by the spring to its opposite Suppose, for illustration, that the tongue B controls the direction-of car travel at the intersection of a main and a branching track, the latter being infrequently used as,

much of the invention as relates to the re-' versible spring may be applied to any springswitch with or without operating mechanism. 1

Having thus described our invention, What we claim as new, and desire to secure by Letters Patent, is-- 1. The combination with a switch tongue or point, and a laterally-extending rod connected thereto, of a spring-box into which saidrod extends, a spring surrounding said rod, and bearings for the ends of said spring, one of which is carried by the rod and the other by the box, said bearings being mutually interchangeable, so that the spring may be made to act upon said rod in either one of two directions.

2. In a spring-switch, the combination with the switch tongue or point, a rod connected thereto, and a spring-box into which said rod extends, a spring seated on said rod, a springbearing seated by said box and movable from one end of the spring to the other, and a spring-bearing carried by said rod and also movable from one end of the spring to the other.

3. In a spring-switch, the combination with a switch point or tongue,a rod connected thereto, and a spring acting on said rod, of a bearing for one end of said spring supported independently of the rod and movable from one end of the spring to the other, and a second springbearing carried by the rod and movable thereon from one end of the spring to the other.

4:. In a spring-switch, a spring-box having a movable spring-bearing, and seats for said hearing at two different points.

5. The combination with a switch tongue or point, of a rod connected thereto, a reversibly-acting spring on said rod, and actuating means connected to said rod.

6. The combination with a movable switch tongue or point, of a rod connected thereto, a spring acting upon said rod, a horizontallypivoted lever engaging the said rod between the point or tongue and the said spring, a connecting-rod attached to the said lever and extending to an operating-box, and an actuating-lever connected to said rod within the said box.

7. The combination with a switch tongue or point, of the slotted rod connected thereto, the spring, the interchangeable bearings for said spring whereby its action may be reversed, the short lever engaging the said rod, and actuating means connected to said lever substantially as described.

In testimony whereof we have affixed our signatures in presence of two witnesses.

EDWARD B. ENTWISLE. FRANK G. WERTZ.

VVit-nesses:

LORETTO OCONNELL, H. W. SMITH. 

